JPS6397516A - Vertical guided return device in pallet conveyor - Google Patents

Abstract

PURPOSE:To simplify a conveying mechanism as well as to aim at a decrease in cost for plant and equipment expenses, by guiding the pallet installed in endless chains opposed to each other, to proper height while holding it horizontally, and having it returned. CONSTITUTION:When symmetrical endless chains 4 are rotated, a pallet 1 makes a guide roller 6 ride on upper rails 24a and 24a and advances forward to a vertical guiding part, while it further advances forward in a four-point supporting state when passing through a position of an upper chain pulley 8a. A vertical guiding endless chain 11 is engaged with a roller receiving device 15, and when it is further rotated, symmetrical guide rollers 6 ride on lower rails 24b and 24b at right and left, and they are moving backward without reversion. When the endless chain 4 and the vertical guiding endless chain 1 both are reversely rotated, the pallet 1 goes vertically upward. Since the roller receiving device 15 is formed into inversed-prapezoidal form, it is smoothly fitted in the guide roller 6 so that no trouble will happen there.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a device for holding a pallet horizontally, guiding it vertically to an appropriate height, and returning the pallet in a conveying device such as a pallet conveyor.

Conventional technology Conventionally, in a pallet conveyor in which pallets are supported on endless chains facing each other, a horizontal return device that holds the pallets horizontally on the endless chains and returns them without inverting them is disclosed in Japanese Patent Application No. 59-184887. Although various devices have been developed, there is no device that guides the object vertically to an appropriate height and returns it.

Problems to be Solved by the Invention Therefore, high-density drying can be achieved by arranging the horizontal return mechanisms in multiple stages on the left and right to face each other in the drying equipment and making the endless chain with a pallet go around in a left-right meandering pattern, but there is no vertical induction return mechanism. Therefore, a large number of horizontal return mechanisms had to be combined, which led to relatively high equipment costs and a high failure rate.

In order to solve such problems, the present invention provides a device that holds a pallet supported on opposing endless chains horizontally together with the endless chains, guides it vertically to an appropriate height, and returns it, By using the present invention in conjunction with a conveyance device combined with a horizontal return mechanism, the conveyance mechanism in a drying device, cooling device, etc. can be simplified, and equipment costs can be reduced.

A foolproof way to solve problems Hereinafter, the present invention will be explained in detail with reference to embodiment figures.

Left and right support pins 2゜2 are protruded from the central positions on both sides of the pallet 1, and left and right support pins 2 are attached to bottle holders 5゜5 attached to the left and right endless chains 4, 4 arranged inside the frames 3, 3 on both sides.
, 2 are loosely attached to support the pallet, and the left and right support pins 2.2
Bins are protruded from the front and back positions on both sides of the pallet l, with the left and right guide rollers 6.6 hanging loosely, and the frames 3, 3 on both sides are placed at appropriate intervals vertically at one end of the left and right endless chains 4°4 on both sides. Bearings are provided to support the upper rotating shafts 7a, 7a and the lower rotating shafts 7b, 7b, and the upper rotating shafts 7a,
The upper chain wheels 8a, 8a are attached to the inner end of the lower rotating shafts 7b, 7a.
The lower chain wheels 8b, 8b are fixed to the inner ends of b, and the left and right endless chains 4.4 are connected to the lower chain wheels 8 from the upper chain wheels 8a+8a, respectively.
b, 8b to form a vertical guiding part, and a distance equal to the distance between the support pin 2 of the pallet 1 and the guide roller 6 is provided in front of the upper rotating shafts 7a, 7a and the lower rotating shafts 7b, 7b facing each other on both sides. The upper rotating shafts 9a, 9a for vertical guides and the lower rotating shafts 9b, 9b for vertical guides are pivotally supported on the 7 frames 3.3, and the upper chain for vertical guides is attached to the inner end of the upper rotating shafts 9a+9a for vertical guides. The wheels lOa, 10a are attached to the inner ends of the lower rotating shafts 9b, 9b for vertical guides.
0b, 10b, respectively, and the vertical guide upper chain wheels 10a, 10a and the vertical guide lower chain wheels 10b, 10.
Endless chains 11, 11 for vertical guides are tied to the ends of the vertical guides 11, 11 to face the endless chains 4, 4 front and back, and a first interlocking chain wheel 12al 12a is attached to the outer end of the upper rotating shafts 7a, 7a facing each other on both sides.
Upper rotating shaft 9a for vertical guide.

The second interlocking chain wheels 12b, 12b are fixed to the outer ends of the chain wheels 9a, and the first interlocking chain wheels 12a, 12a and the second interlocking chain wheels 12b, 1
2b, the interlocking endless chain 13.13 is interlocked with the vertical guide endless chain 11.11 and the endless chains 4, 4 at the same speed. An arbitrary number of plates 14 are attached at intervals between the front guide rollers 6 of each pallet 1 supported on the endless chains 4, 4, and the front guide rollers 6 of each pallet 1 and A loose roller holder 15 that can be fitted is provided protrudingly from the frame 3.3 at the upper and lower positions of the vertically moving endless chain 11.11 and the vertical support plate 16.16. An arc-shaped upper and lower fixed guide plate 17.17 is installed on the upper and lower support plates 16.16, and the circular arc-shaped upper and lower fixed guide plates 17.17, which come in contact with the outer surface of the guide roller 6 that is fitted into the roller holder 15 and returns, are installed on the upper and lower support plates 16.16. An arm rod 18 and a roller base 19 are provided protruding from the frames 3, 3 at an intermediate position between the descending part and the ascending part of the chain 11.11,
A chain guide 20 is attached to the arm rod 18, a tension roller 21 is attached to the roller pace 19, and the upper and lower support plates 22a are attached to the frame 3.3 at positions below the upper and lower moving parts of the left and right endless chains 4.4 facing each other on both sides. , 22b are provided protrudingly to mount the upper chain guide rail 23a and the lower chain guide rail 23b, and the upper and lower chain guide rails 23a.
, 23b, the upper rail 24a on which the guide roller 6 of the pallet 1 rides is installed to a rear position of the upper return part of the pallet, the lower rail 24b is installed to a position below the lower return part of the pallet, and the upper rail 24b is installed to a position below the lower return part of the pallet. A support plate 22c is provided protruding from the frame 3.3 at an upper position so as to erect a presser rail 24c. In addition, an endless chain 11 for vertical guide is installed in front of the vertical guide part of one of the vertical guide parts of the endless chain facing on both sides, and a roller holder i5 is attached, and a circular An example of an embodiment in which an arc-shaped fixed guide plate 17 is constructed is conceivable. In the figure, 25 is a dryer, 26 is a horizontal return mechanism, and 27 is a vertical induction return mechanism.

Effects When the left and right endless chains 4, 4 in the frame 3.3 are rotated as shown by the arrows, the pallet 1, which is supported on both sides by the left and right support pins 2.2 on the upper moving parts of the left and right endless chains 4, 4, , the guide rollers 6°6 at the front and rear positions on both sides are connected to the left and right E section rails 24a.
, 24a and proceed to the vertical guide section, and the left and right guide rollers 6.6 at the front of the pallet 1 are placed on the northern rail 24a.
, 24a and passes the position of the northern chain wheel 8a+8a, the pallet 1 is supported by the left and right support pins 2, 2, and the left and right guide rollers 6.6 on both rear sides of the leg rail 24.
a, 24a and presser rails 24c, 24c, and it moves in a state of four-point support.

The vertical guide endless chain 11.11 located in front of the left and right endless chains 4, 4 is connected to the first and second interlocking chain wheels 12a.
, 12b, and the interlocking endless chain 13 rotate in the same direction and at the same speed as the endless chain 4.4, and the left and right support pins 2, 2 of the pallet 1 are rotated by the joint wheel 8a,
When approaching the upper center of 8a, the guide rollers 6 on both sides of the front part.
6 engages with the roller holder 15 rotating together with the vertical guide endless chains 11, 11, and when the endless chain 4.4 further rotates, the left and right guide rollers 6 on both rear sides of the pallet 1
．． 6 is away from the upper rail 24a + 24a,
The pallet 1 is attached to the endless chain 4 via the roller holder 15 of the vertical guide endless chain 11゜11 and the left and right support pins 2, 2.
．． It descends vertically downward while being supported at four points by the left and right support pins 2.2 and 4.4.
lower chain wheel 8b.

8b, the left and right guide rollers 6.6 on both the front and rear sides of the pallet 1 move toward the left and right lower rails 24b, 2.
4b and travels backwards without reversing. Endless chains 4, 4 and vertical guide endless chain 11.
When the pallet 11 is rotated in the opposite direction, the pallet 1 rises vertically upward. 4゜Endless chain for vertical guide 11,1
Since the roller holders 15 of 1 have a common shape, they fit smoothly with the guide rollers 6 of the pallet 1, and the vertical guide endless chains 11 and 11 have arc-shaped Lower fixed guide plate 17.Roller support 1 with 17
5 and the guide roller 6 fitted with the guide roller 6, the fitting is smooth and no failure occurs, and the height of the vertical guide part of the endless chains 4, 4 and the endless chain for vertical guide 11.11 can be freely selected. As shown in FIG.
5, the vertical induction return mechanism 2 of the present invention is installed at both ends of the pallet horizontal return mechanism 26 combined in a left and right meandering manner.
By combining 7, it is possible to simplify the pallet conveyance mechanism and reduce equipment costs.The endless chain 11 for vertical guide is installed only on one side as in the embodiment example and supported at three points. It has the remarkable effects mentioned above, such as being able to be guided in the above-mentioned state.

[Brief explanation of the drawing]

Fig. 1 is a plan view of a vertical induction return mechanism according to an embodiment of the present invention, Fig. 2 is a partial plan view thereof, and Fig. 3 is Fig. 2A-
A-line arrow view, Figure 4 is the same <B-B line partially enlarged sectional view,
FIG. 5 is a partially enlarged sectional view taken along the line C--C in FIG. 3, and FIG. 6 is a system diagram of a pallet conveying device that combines a horizontal return mechanism and a vertical induction return mechanism.

Claims (1)

[Claims] 1. Guide rollers are pivotally supported at front and back positions on both sides of the pallet,
In a pallet conveying device that transports each pallet while supporting the intermediate position of the front and rear guide rollers on both sides on endless chains facing each other and guiding the guide rollers on guide rails, an appropriate interval is provided below the upper chain wheels facing on both sides. A vertical guide part of an appropriate height is provided by placing lower chain wheels facing each other on both sides, and an endless chain is passed around the upper chain wheel and lower chain wheel which are vertically opposed. In front of the lower chain wheel, an upper chain wheel for vertical guide and a lower chain wheel for vertical guide are arranged opposite to each other at the same distance as the distance between the support point for the endless chain of the pallet and the guide roller, and An endless chain for vertical guides is tied to an upper chain wheel for vertical guides and a lower chain wheel for vertical guides, which are opposed to each other, and interlocked with an endless chain for conveying pallets, and pallets are conveyed on the inner surfaces of the endless chains for vertical guides facing each other on both sides. An arbitrary number of plates are attached at intervals between the front guide rollers of each pallet supported on an endless chain for vertical guiding, and an inverted trapezoid-shaped roller holder is provided protruding from the plates to form an endless chain for vertical guiding. An arc-shaped fixed guide plate is installed in the vertically moving part to inoculate the outer surface of the guide roller that fits with the roller holder and returns, and a chain guide and tension are installed in the descending part and the rising part of the endless chain for vertical guide. A vertical induction return device for a pallet conveying device, characterized by being equipped with rollers. 2. An endless chain for vertical guide is installed in front of the vertical guide part on one side of the vertical guide parts of the endless chains facing on both sides, and a roller holder is attached to the endless chain for vertical guide, and the upper and lower 2. The vertical guidance return device for a pallet conveying device according to claim 1, characterized in that an arcuate fixed guide plate is installed on the rotating portion.